Uremco 3-3686 Carburetor

Carburetor for Heavy-Duty GM Applications

Uremco 3-3686 is a replacement carburetor for select 1980-1985 Chevrolet and GMC heavy-duty trucks and vans equipped with the M4MC carburetor. It is built for direct application matching, with fitment coverage that includes Chevrolet C20, C30, G20, G30, K20, K20 Suburban, K30, P20, and P30, plus GMC C2500, C2500 Suburban, C3500, G2500, G3500, K2500, K2500 Suburban, K3500, P2500, and P3500.

• Replacement carburetor for GM M4MC applications
• Fits 1980-1985 Chevrolet C20, C30, G20, G30, K20, K20 Suburban, K30, P20, and P30
• Fits 1980-1985 GMC C2500, C2500 Suburban, C3500, G2500, G3500, K2500, K2500 Suburban, K3500, P2500, and P3500
• Heavy-duty application coverage for trucks and vans
• Part number 3-3686 for catalog lookup and verification

Fitment Details

• Fits 1980-1985 Chevrolet C20, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet C30, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet G20, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet G30, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet K20, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet K20 Suburban, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet K30, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet P20, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 Chevrolet P30, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC C2500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC C2500 Suburban, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC C3500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC G2500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC G3500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC K2500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC K2500 Suburban, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC K3500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC P2500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number
• Fits 1980-1985 GMC P3500, N/A, Carb M4MC, Heavy Duty, Check OEM for Our Part Number

What This Carburetor Helps Address

• Hard starting on carbureted Chevrolet and GMC trucks
• Rough idle or unstable throttle response
• Fuel delivery issues tied to a worn M4MC carburetor
• Driveability problems on heavy-duty GM applications
• Replacement needs when the original carburetor is no longer serviceable

Installation Notes

Verify the OEM carburetor identification before ordering, since this application is listed for M4MC-equipped vehicles. Confirm the vehicle year, make, model, and heavy-duty configuration against the existing unit and service information before installation. The part number 3-3686 should be matched to the original application for proper fitment on Chevrolet and GMC trucks and vans.

Quality Assurance

Uremco catalogs this carburetor for specific GM heavy-duty applications, with fitment guidance tied to the original M4MC setup. Check the OEM number and application details to confirm correct replacement selection.